Fast variability of tera-electron volt γ rays from the radio galaxy M87

被引：297

作者：

Aharonian, F.

Akhperjanian, A. G.

Bazer-Bachi, A. R.

Beilicke, M.

Benbow, W.

Berge, D.

Bernloehr, K.

Boisson, C.

Bolz, O.

Borrel, V.

Braun, I.

Brown, A. M.

Buehler, R.

Buesching, I.

Carrigan, S.

Chadwick, P. M.

Chounet, L. -M.

Coignet, G.

Cornils, R.

Costamante, L.

Degrange, B.

Dickinson, H. J.

Djannati-Atai, A.

Drury, L. O'C.

Dubus, G.

Egberts, K.

Emmanoulopoulos, D.

Espigat, P.

Feinstein, F.

Ferrero, E.

Fiasson, A.

Fontaine, G.

Funk, Seb.

Funk, S.

Fuessling, M.

Gallant, Y. A.

Giebels, B.

Glicenstein, J. F.

Goret, P.

Hadjichristidis, C.

Hauser, D.

Hauser, M.

Heinzelmann, G.

Henri, G.

Hermann, G.

Hinton, J. A.

Hoffmann, A.

Hofmann, W.

Holleran, M.

Hoppe, S.

机构：

[1] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany

[2] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[3] Yerevan Phys Inst, Yerevan 375036, Armenia

[4] UPS, CNRS, Ctr Etud Spatiale Rayonnements, F-31029 Toulouse 4, France

[5] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[6] Observ Paris, CNRS, UMR 8102, Lab Univers & Theories,Sect Meudon, F-92195 Meudon, France

[7] Univ Durham, Dept Phys, Durham DH1 3LE, England

[8] North West Univ, Unit Space Phys, ZA-2520 Potchefstroom, South Africa

[9] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[10] CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France

[11] Univ Paris 07, CNRS, CEA,UMR 7164, Observ Paris, F-75025 Paris 13, France

[12] Dublin Inst Adv Studies, Dublin 2, Ireland

[13] Heidelberg Univ, Landessternwarte Konigstuhl, D-69117 Heidelberg, Germany

[14] Univ Montpellier 2, CNRS, IN2P3, Lab Phys Theor & Astroparticules, F-34095 Montpellier 5, France

[15] CE Saclay, CEA, DSM, DAPNIA, F-91191 Gif Sur Yvette, France

[16] Univ Grenoble 1, CNRS, Inst Natl Sci Univers, Lab Astrophys Grenoble, F-38041 Grenoble 9, France

[17] Univ Tubingen, Inst Astron & Astrophys, D-72076 Tubingen, Germany

[18] Univ Paris 06, CNRS, IN2P3, Phys Theor & Hautes Energies Lab, F-75252 Paris 5, France

[19] Univ Paris 07, F-75252 Paris 5, France

[20] Charles Univ Prague, Inst Nucl & Particle Phys, CR-18000 Prague 8, Czech Republic

[21] Ruhr Univ Bochum, Lehrstuhl Weltraum & Astrophys 4, Inst Theoret Phys, D-44780 Bochum, Germany

[22] Univ Namibia, Windhoek, Namibia

[23] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany

来源：

SCIENCE | 2006年 / 314卷 / 5804期

关键词：

D O I：

10.1126/science.1134408

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The detection of fast variations of the tera - electron volt (TeV) (10(12) eV) gamma-ray flux, on time scales of days, from the nearby radio galaxy M87 is reported. These variations are about 10 times as fast as those observed in any other wave band and imply a very compact emission region with a dimension similar to the Schwarzschild radius of the central black hole. We thus can exclude several other sites and processes of the gamma-ray production. The observations confirm that TeV g rays are emitted by extragalactic sources other than blazars, where jets are not relativistically beamed toward the observer.

引用

页码：1424 / 1427

页数：4